Build Configuration not found

Hi. I am trying to build/flash a sample with nrfConnect and vscode. When I add a build configuration, I face following issue :  

-If the output build directory is "build/something", the build configuration is found in the "APPLICATIONS" windows, and I can debug/flash application.

-if the output build directory is "build/something/foo", the build config is NOT found, and I can't debug/flash. The application builds successfully as I can see the folder and the hex files under "build/something/foo"

Is there any configuration feature I am missing to make nrfConnect to scan more than 2 levels output path?

thank you for your help

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